| Abstract: | This is a method of producing crystal linear high molecular weight poly p-phenylene sulfide (HMWPPS) resins by mixing hydrogen sulfide which is produced from the acid gas of desulphurization factory of natural gas, sodium hydroxide, p-dichlorobenzene and additive sodium phosphate, and carrying out the polycondensation in hexamethyl phosphoryl triamide (HPTA) solvent for 4 to 6 h under normal pressure. This method has obvious advantages as simple equipment, easy operation, high activity, stable solvent, high product yield, low cost and it is suitable for large-scale industrial production. |
